The BMW 5 Series GT 520D 184hp (F07 - 2009 - 2017) produces 184bhp and 380Nm in standard form. Our Stage 1 ECU tuning file raises output to 220bhp and 440Nm, a gain of 36bhp and 60Nm, with no hardware modifications required. The file is delivered through the ByteFLASH portal and is ready to write to the vehicle.